Set-top box



FIG. 1 is a top view of a set-top box showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a left side view thereof, the right side view being identical.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a set-top box, as shown and described. 